Does Botox for facial slimming have any side effects?
Dec 15, 2021
Source: Cainiu Health
Dr. Li Ruizhi
Introduction
The amount of botulinum toxin type A used clinically is extremely small, and at therapeutic doses, it does not cause toxic or adverse effects. Botulinum toxin type A injections for facial slimming work by injecting the toxin into the masseter muscle, thereby blocking signal transmission between nerves and muscle fibers, resulting in relaxation and atrophy of the masseter muscle. This effect typically lasts 4–6 months.
Many women who value their appearance seek facial slimming in daily life, often opting for “face-slimming injections.” This method is popular because it delivers rapid results—primarily by promoting the breakdown of facial fat. Although face-slimming injections can effectively reduce facial fullness, they may also cause several side effects, such as impaired facial expression, resulting in an unnatural or stiff smile. So, do face-slimming injections have side effects? Below, we address this question.
Do Face-Slimming Injections Have Side Effects?
Face-slimming injections—also known as type A botulinum toxin—are a neurotoxin produced by Clostridium botulinum. However, the amount used clinically is extremely small, and at therapeutic doses, it does not produce toxic or adverse effects.
When injected into the masseter muscle for facial slimming, type A botulinum toxin blocks neural signaling between nerves and muscles, causing the masseter to relax and atrophy. This effect typically lasts 4–6 months.
After 4–6 months, a second injection of type A botulinum toxin is required to maintain optimal facial slimming results. Generally, side effects from face-slimming injections are minimal—as long as the toxin does not diffuse beyond the target area, significant adverse reactions rarely occur. However, excessive dosage or improper injection site selection may impair facial expression, leading to facial stiffness. In rare cases, overdose may affect respiratory muscles and compromise breathing.
Knowledge Extension: Contraindications for Face-Slimming Injections
1. Patients with myasthenia gravis.
2. Patients with adrenal gland dysfunction.
3. Individuals with severe cardiac, hepatic, or renal disease.
4. Individuals with known hypersensitivity or allergic constitution.
5. Pregnant or lactating women.
6. Patients with neuromuscular disorders.
7. Individuals who have consumed alcohol (including beer) within the past week.
8. Individuals unable to minimize frequent activity of facial expression muscles.
9. Individuals who have taken aspirin or other antipyretic-analgesic medications within the past two weeks.
10. Patients currently receiving aminoglycoside antibiotics (e.g., gentamicin, streptomycin).
The above outlines potential side effects and contraindications associated with face-slimming injections. We hope this information is helpful to you.
